CH₃OH ﹩{J}_{{K}_{a},{K}_{c}}={18}_{\mathrm{3,15}}-{17}_{\mathrm{4,14}}\,A,{v}_{t}=0﹩ pv maps. (a) The pv map following the gray line in Figure 2(a), i.e., perpendicular to the outflow/rotation axis (PA = 125°) and a slit width of 0.″1. The dotted green lines show the offset of the continuum sources ALMA1-WEST (left) and ALMA1-EAST (right). (b) The pv map of the northern spiral-like feature following the blue line in Figure 2(a) and a slit width of 0.″05. Zero offset corresponds to ALMA1-WEST. (c) The pv map of the southern spiral-like feature following the red line in Figure 2(a) and a slit width of 0.″05. Gray contour levels are −6, −3, 3, 6, 12, and 24 × σ with σ = 1.2 mJy beam⁻¹. The blue contours in (a) are from an IRE model (see Section 4.1) at the same levels as the data relative to the peak, while the blue lines in (b) and (c) correspond to linear fits to data over 10σ. Zero offset corresponds to ALMA1-EAST. The dashed green line correspond to the systemic velocity v _LSR = −47.2 km s⁻¹.